operation

/ˌɑː.pəˈreɪ.ʃən/

名词

手术
He has to have an operation on his shoulder.
他的肩部必须做个手术。
（数学）运算
运作，实施，工作
The operation to fly in supplies will begin as soon as possible.
向这里空运补给品的行动会尽快展开。